- Game title: Underground Invasion
- Category: Shooting Games
- Game ID on Flash Game: 5458
- Game author: Maxgames
- Total hits of the game: 6025 times
- Best screen resolution: 800 x 500 pixels
- Game instructions for Underground Invasion:
Underground Invasion, a shooting game, is free. Join it on www.flash-game.net to have some fun. The task for you is to keep your city from the invading ghosts. Move the mouse to aim and left click to shoot. You earn money by killing enemies and you can press A for upgrades. Press keys 1 to 5 to change weapons. R is for reloading. You can view your performance after each level. Good luck!